[QGIS-Developer] Shapefile not correctly shown in some areas

[Aurélie Tisson (BastaPrint)]

Hello, 
To make things short, I have a device which gathers data in the fields (hundreds of data per second), and gets the position through a GPS (every second). 

Between 2 GPS positions, I triangulate the positions, so the points are aligned. 

Sometimes, the device "writes" the data so it spends some time doing so, and it does not gather anything, so I have a "hole". 



Then, to visualize the data, I create a Shapefile, only with Points. 



In one Shapefile, I had some strange points: points that appear on the map, but are not clickable and disappear when I zoom in too much. I attach the files ; they can be downloaded here, too: https://www.grosfichiers.com/sjNC3yx7Kvi 


For instance, in the file I join, the position number 1613 and further are problematic. If my viewing area includes the point 1612, I see all the points, well aligned, but I cannot click points 1613 and further. 

If I zoom in, or if I move the area and the point 1612 is out of the area, I see nothing anymore. 

The code to generate the Shapefile has a systematic approach: it takes the points one after the other, and writes their position by incrementing the values. So I suspect there is no bug. 
In a previous test, the same problem occured BEFORE point 1217 : I could only see the first points if the area included point 1217. 


Questions: 
- can anyone try to see my shapefile and confirm the problem? 

- does this bug ring a bell to anyone? 
- what may be the problem? 



Thank you very much! 

My versions are detailled below. I just updated to the LTR to try to solve the problem, but the bug exists with the 3.22.7-Białowieża and 3.28.14-Firenze versions. 




Aurélie 





	
Version de QGIS 	
3.28.14-Firenze 	
Révision du code 	
b09131c512 
	
Version de Qt 	
5.15.3 
	
Version de Python 	
3.9.5 
	
Version de GDAL/OGR 	
3.8.2 
	
Version de Proj 	
9.3.1 
	
Version de la base de données du registre EPSG 	
v10.098 (2023-11-24) 
	
Version de GEOS 	
3.12.1-CAPI-1.18.1 
	
Version de SQLite 	
3.41.1 
	
Version de PDAL 	
2.6.0 
	
Version du client PostgreSQL 	
unknown 
	
Version de SpatiaLite 	
5.1.0 
	
Version de QWT 	
6.1.6 
	
Version de QScintilla2 	
2.13.4 
	
Version de l'OS 	
Windows 10 Version 2009 
	
	
	
	

	
Extensions Python actives 
	
QGeoloGIS 	
1.9.0 
	
db_manager 	
0.1.20 
	
grassprovider 	
2.12.99 
	
MetaSearch 	
0.3.6 
	
processing 	
2.12.99 
	
sagaprovider 	
2.12.99 




======= Previously ========= 



	
Version de QGIS 	
3.22.7-Białowieża 	
Révision du code 	
5a65627a 
	
Version de Qt 	
5.15.3 
	
Version de Python 	
3.9.5 
	
Version de GDAL/OGR 	
3.4.3 
	
Version de Proj 	
9.0.0 
	
Version de la base de données du registre EPSG 	
v10.054 (2022-02-13) 
	
Version de GEOS 	
3.10.2-CAPI-1.16.0 
	
Version de SQLite 	
3.38.1 
	
Version de PDAL 	
2.3.0 
	
Version du client PostgreSQL 	
13.0 
	
Version de SpatiaLite 	
5.0.1 
	
Version de QWT 	
6.1.6 
	
Version de QScintilla2 	
2.13.1 
	
Version de l'OS 	
Windows 10 Version 2009 
	
	
	
	

	


	


	


	


	


	


	





-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20240112/ffac5388/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20240110-153600.prj
Type: application/octet-stream
Size: 453 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20240112/ffac5388/attachment-0004.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20240110-153600.cpg
Type: application/octet-stream
Size: 5 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20240112/ffac5388/attachment-0005.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20240110-153600.shp
Type: application/octet-stream
Size: 56128 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20240112/ffac5388/attachment-0006.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20240110-153600.shx
Type: application/octet-stream
Size: 16108 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20240112/ffac5388/attachment-0007.obj>